Ask Question
PhysicsPhysics
Nia Williamson
The position vector for a particle moving on a helix is c (t) = (cost, sint, t^2). Find the speed of the particle at time t = 4pi
Answer Answers (1)
PhysicsPhysics
Loser
If a woman weighs 125 lb, her mass expressed in kilograms is x kg, where x is
Answer Answers (2)
PhysicsPhysics
Kolton
Two cars are traveling in the same direction and with the same speed along a straight highway. Does either driver hear a different frequency from the other car's horn than they would if the cars were stationary
Answer Answers (1)
PhysicsPhysics
Guest
1.9 kg block of iron at 24 °C is rapidly heated by a torch such that 14 kJ is transferred to it. What temperature would the block of iron reach (assuming the complete transfer of heat and no loss to the surroundings) ? If that same amount of heat (14 kJ) was quickly transferred to a 810 g pellet of copper at 24 °C, what temperature would the copper reach before it begins losing heat to the surroundings?

Cs, Fe (s) = 0.450 J/g*C

Cs, Cu (s) = 0.385 J/g*C
Answer Answers (1)
PhysicsPhysics
Alissa Garrison
According to Galileo, this quantity is not needed to keep a body in motion under ideal conditions.
Answer Answers (1)
PhysicsPhysics
Guadalupe
In which state of matter are particles held together but still able to move around

each other?

A. gas

B liquid

C. vapor

D. ice
Answer Answers (2)
PhysicsPhysics
Alani Velazquez
a film of transparent material 120 nm thick and having refractive index 1.25 is placed on a glass sheet having refractive index 1.50. (A) Determine the longest wavelength of light that interferes destructively when reflected from the film. (B) Determine the longest wavelength that interferes constructively
Answer Answers (1)
PhysicsPhysics
Alvarado
Hat is the kinetic energy of a 1.0-kg billiard ball that moves at 5.0 m/s?

A.

5.0 J

B.

6.5 J

C.

10.0 J

D.

12.5 J
Answer Answers (1)
PhysicsPhysics
Judith Cabrera
Linus builds an electrical circuit with a battery and with wires that carry the current. As the battery weakens, the current also weakens.

How does this affect the magnetic field around the wires?

1The field gets stronger.

2The field gets weaker.

3The field changes direction.

4The field disappears completely.
Answer Answers (1)
PhysicsPhysics
Nina Montgomery
Ignoring details associated with friction, extra forces exerted by arm and leg muscles, and other factors, we can consider a pole vault as the conversion of an athlete's running kinetic energy to gravitational potential energy. If an athlete is to lift his body 3.8 m during a vault, what speed (in m/s) must he have when he plants his pole
Answer Answers (1)
PhysicsPhysics
Kaya Bridges
DNA is coiled into chromosomes in a cell's
Answer Answers (2)
PhysicsPhysics
Gunnar Mejia
When an electron is gained, the resulting ion is? When an electron is lost, resulting ion is?
Answer Answers (1)
PhysicsPhysics
Brenna Golden
Why does a straw look broken viewed in a glass of water?
Answer Answers (1)
PhysicsPhysics
Bradyn Cook
What would happen to the coil if the current passing through it was too large?
Answer Answers (1)
PhysicsPhysics
Cody Galloway
Listed following are three possible models for the long-term expansion (and possible contraction) of the universe in the absence of dark energy:

A) recollapsing universe

B) coasting universe

C) critical universe

Rank each model from left to right based on the ratio of its actual mass density to the critical density, from smallest ratio (mass density much smaller than critical density) to largest ratio (mass density much greater than critical density).
Answer Answers (1)
1 ... 26 27 28 29 30 ...
Home » Physics » Page 28
Sign Up Forgot Password?